Bringing on a new employee involves more than just the salary — it includes the time it takes for them to learn, adapt, and contribute at full capacity. In both US and UK businesses, measuring this 'time to productivity' is key to understanding the true cost of hiring.
This calculator helps HR and hiring managers estimate the ramp-up period and associated costs, allowing for better budgeting, more accurate forecasting, and improved onboarding planning. Whether you're comparing candidates or evaluating your hiring strategy, this tool provides actionable insights.
How the calculation works
The Time to Productivity Calculator uses a simple yet effective formula to estimate the cost of a new hire during their ramp-up period. It calculates the time from the start date to when the employee reaches full productivity (as a percentage), then multiplies the hourly wage by the number of hours worked during this period. This total gives the cost of 'lost productivity' during the onboarding phase.
The formula is as follows: Total Ramp-Up Cost = (Time to Productivity in Weeks × Weekly Hours × Hourly Rate) × (1 - Productivity Percentage / 100). The calculator allows you to input custom productivity milestones for more accurate tracking in the US and UK contexts.
How to use this calculator
- Enter the new hire's estimated time to reach full productivity (in weeks).
- Input their hourly or daily rate (or annual salary if preferred).
- Set the weekly working hours based on your region's standard (e.g., 40 hours in the US or 37.5 in the UK).
- Adjust the productivity percentage if you expect a staged ramp-up (e.g., 50% in week 1, 75% in week 2, etc.).
- Review the calculated ramp-up cost and time to full productivity.
- Use the results to compare candidates or improve your onboarding process.